[matchtags addon] option added to highlight both tags
[matchtags addon] cleanup b3a1ed4

Issue #1781
[real-world uses] Add Tilemill
[real-world uses] Add uiCod
[show-hint addon] Fix broken inside-window-positioning code

Closes #1784
CSS lint addon with https://github.com/stubbornella/csslint
[css-lint addon] Don't add new deprecated code, fix trailing space

Issue #1782